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Universal Relation Database에서의 Representative Instance와 질의 해석
왕창종,이의섭 한국정보과학회 1985 한국정보과학회 학술발표논문집 Vol.12 No.1
Universal relation system의 근본 문제는 [X] 를 정의하고 계산하는 문제인데, 그 하나의 접근법은 representative instance의 total pro-Jection을 사용하는 것이다. representative instance는 database에 저장된 모든 정보의 정확한 표현으로서 제안되었다. chase process를 사용하여 representative instance를 만들 때에는 FD 법칙과 함께 JD 법칙도 적용되어야 하며 minimal instance를 구하기 위하여는 row covering을 사용하는 것으로 충분하다고 생각한다. 그리고 representive instance system에서의 질의 해석을 위한 algorithm을 제안한다.
個人 및 團體競技選手와 非選手의 運動貧荷强度別 心博數 比較
金永煥,秋健二,王昌鍾 仁荷大學校 스포츠 科學硏究所 1989 論文集 Vol.1 No.-
This experimental study is to find out the physical endurance through heart rates according to the intensity of exercise. The experiment was applied to personal-game players in athletics, swimming, boxing and skating, and to team players in handball, volleyball, basketball and soccer, and to non-players. The intensity of exercise was divided into five kinds (12, 18, 24, 30, 36 times/minute) according to the speed of going up and down the wooden steps made for the test. Heart rates were measured while players and non-players under test were resting from one minute and a half to two minutes after exercise. The measurement of heart rates, twice in all, was took once every second day by using 108 system heart checker. T-test were applied to find out the average difference among three groups. 1. Heart rates of personal-game players were as follows: 131.0±10.53 beats/minute during the exercise intensity of 12 times/minute; 136.2±12.28 beats/minute during 18 times/minute; 139.1±11.9 beats/minute during 24 times/minute; 141.1±13.3 beats/minute during 30 times/minute; 144.5± 6.92 beats/minute during 36 times/minute: 2. Heart rates of team game players ranged as follows: 131.8±8.3 beats/minute during the exercise intensity of 12 times/minute; 138.0±9.89 beats/minute during 18 times/minute; 143.4±9.11 beats/minute during 24 times/minute; 148.5±9.64 beats/minute during 30 times/minute; 156.2±8.42 beats/minute during 36 times/minute. 3. Heart rates of non-players were as follow: 154.2±13.85 beats/minute during the exercise intensity of 12 times/minute; 155.6±15.62 beats/minute during 18 times/minute; 164.6±12.88 beats/minute during 24 times/minute; 172.4±13.37 beats/minute during 30 times/minute; 189.6±16.49 beats/minute during 36 times/minute. 4. All of the personal and team-game players under test had more excellent physical endurance than non-players, and showed less heart rates when tested in the five kinds of exercise intensity. Especially, both of them indicated more physical endurance when the exercise intensity increased A small gap of difference arose among each personal and team-game player in heart rates under the exercise intensity of 30 times/minute, but personal game players indicated less heart rates than team-game players when the intensity became 36 times/minute. (P<0.05). The most significant of the results in this research was the fact that a wider difference came out between personal and team-game players during the exercise intensity of 36 times/minute.
Pepresentative Instance의 X-Total Projection의 효율적 계산방법
왕창종(Chang Jong Wang),이의섭(Ehi Seob Lee),윤경섭(Gyeong Seob Yun) 한국정보과학회 1985 정보과학회논문지 Vol.12 No.4
RI(Representative Instance)는 유니버설 릴레이션시스템에서 질의문에 나타난 속성의 집합 X에 관한 연결, [X]를 계산하기 위한 방법으로 제안되었다. 이는 질의어에 대한 대답을 만들어내기 위하여 RI의 토탈 프로젝션을 사용하자는 것이다. RI의 토탈 프로젝션을 효율적으로 만들어 내는 방법을 제안한다. Representative Instance as a method in which we compute [X], the connection on the set of attributes X that appears in the query, in the Universal Relation System. That is, the Total Projection of RI is used to make the answer for a query. We suggest the efficient method to operate the Total Projection of RI.
CAAMS(Chemical Agent Automatic Management System) 개발에 관한 연구
장영현,왕창종,장광훈,윤경섭,이세훈 한국정보과학회 1986 한국정보과학회 학술발표논문집 Vol.13 No.2(1)
Chemical Agent Automatic Management System은 현재 상태의 화학분야에서 개별적이고 수동적인 관리 업무를 종합적, 체계적, 능동적인 관리 형태로 변환시키는 이론과 방법 절차를 소프트웨어화하여 해당분야 업무를 효율성, 안정성, 전문성을 정립시키기 위한 시스템이다. 현재 완전한 독립 상태 업무 3개 유형을 Sampling Model 로 선택하여 CAAMS에 실제 적용시켜 보고, 이의 기능을 평가 분석해 본다.